IV. Maintenance & Service
Notice: Air conditioning unit should be maintained by professional workers. The professional workers should do
daily monitoring and periodical maintenance for the unit. Strict position guide system and operating instructions
should be established. Pay attention to regularly maintenance, service,check and repair.
4-1 Filter
4-1.1 Filter removing method
For PF filter,remove the side lug,take the filter away from each side.
For PF filter,open the access door,take the filter away from each side.
For PF&BF filter,open the access door to take the plate filter away from side,and then take away the bag filter from
down-stream.
4-1.2 Air handling unit adopts plate filter that can be cleaned Please inspect the air pressure drop of filter in its running
carefully. Generally, when the resistance of the filter is twice of the original one, you should replace or clean the filter. You
can pat plate type filter to wipe off dust and wash it in warm water by neutral abstergent if necessary. Re-install it in original
position after filter is dry.
4-2 Fan & Electric Motors
There are two categories bearing in YCM series, including bearing no grease nipple and bearing with grease nipple.
Inspect the lubrication situation for fan bearing at least twice a year.Good maintain method will prolong bearing’s service
life. Refer to table 4 and blow steps to maintain the bearing.
1.If need, clean the bearing and replace the obsolete lubricating grease. Must inspect the fan status if it has not been
operating over one month.
2.For bearing with grease nipple, lubricating grease injected by grease squirt. Clean the grease nipple and grease squirt,
avoid the pollution come in the inner of bearing.
3.Should turn fan wheel during the lubricating grease injection, it can ensure the lubricating grease distributing on average.
Stop injection when the lubricating grease spill over from the bearing shield.
4.Maintenance periodically, inject lubricating grease appropriately according to table 4.
5.Clean the surface of bearing after lubricating grease injection.
For bearing no grease nipple, lubricating grease replacement steps: firstly, remove the bearing cap and wash the bearing by
gasoline, after it’s dry, fill in lubricating grease. Refer to table 4 for the lubricating types.
To fill in the lubricating grease according to table below for motor:
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Maintenance&
Service